Association of serum 25-hydroxyvitamin D and diabetes-related factors in Korean adults without diabetes: The Fifth Korea National Health and Nutrition Examination Survey 2010-2012

Although 25(OH)D status was not significantly associated with FBG or HbA1c, low 25(OH)D levels were associated with compensative insulin increase and ongoing increase in insulin resistance. Thus, vitamin D deficiency is assumed to influence DM occurrence.